METHODS OF MAKING FLEXIBLE CONTAINERS Russian patent published in 2017 - IPC B65D75/00 

FIELD: packaging industry.

SUBSTANCE: method of forming flexible containers, which comprises joining together a first flexible outer sheet and a second flexible inner sheet to form a first part of the joined material, first flexible inner sheet is made from material, with coefficient of elasticity in the range of 1,000–2,500,000 n/m; first flexible outer sheet is made of material, with coefficient of elasticity in the range of 1,000–2,500,000 n/m, connect at least a part of the first flexible inner sheet with at least a part of the first flexible outer sheet, to forme the first multi-wall panel, first multi-wall panel is framed with a weld seams, connecting the first flexible inner sheet with the first flexible outer sheet; first flexible inner sheet and the first flexible outer sheet overlap with each other between weld seams essentially along the whole first multi-wall panel; first flexible inner sheet and the first flexible outer sheet freely detach from each other along the first multi-wall panel; and the first multi-wall panel forms a coating of the section for the product; at least a part of the section for the product, which is formed by the first flexible inner sheet, and the first set of sections, providing a supporting structure, in the first part of the joined material, including the first section providing a supporting structure on the left side of the first part of joined material, at least, partially limiting the first multi-wall panel, and the second section providing a support structure on the right side of the first part of joined material, at least, partially limiting the first multi-wall panel, each section providing a support structure of the first set are expended, so that the first section providing a supporting structure forms the first extended section providing a supporting structure, space of which is filled, made from one or more flexile material and filled with one or more gases at pressure which is above than the atmospheric pressure, to ensure rigidity of the first expended section providing a supporting structure; second section providing a supporting structure forms the second extended section providing a supporting structure, space of which is filled, made from one or more flexile material and filled with one or more gases at pressure which is above than the atmospheric pressure, to ensure rigidity of the second expended section providing a supporting structure; and the first and the second sections providing a supporting structure created and maintain the tensile stress in the first multi-wall panel, and the section for product is filled so, that the section for product directly contains a liquid product.

EFFECT: forming flexible containers.

10 cl, 45 dwg